Image forming apparatus

Abstract

When a first unit is disposed at a position at which a transfer member comes into contact with an image carrier, the first unit is urged in a first urging direction intersecting a movement direction of a second unit by a second urging member disposed between the first unit and the second unit being movable between a first attachment position with respect to an image forming apparatus body and a second attachment position different from the first attachment position.

What is claimed is: 
     
       1. An image forming apparatus including an image carrier, comprising:
 a first unit that includes a transfer member which is rotatable and abuts against the image carrier and a first urging member for urging the transfer member against the image carrier, and that is movable from a position at which the transfer member comes into contact with the image carrier to a position at which the transfer member is separated from the image carrier, 
 wherein, when the first unit is disposed at the position at which the transfer member comes into contact with the image carrier, the first unit is urged in a first urging direction intersecting a movement direction of a second unit by a second urging member disposed between the first unit and the second unit being movable between a first attachment position with respect to an image forming apparatus body and a second attachment position different from the first attachment position, 
 wherein the first unit includes a power supply terminal which is engaged with a body power supply terminal provided in the image forming apparatus body and supplies power to the transfer member, at an end surface of a portion of the first unit in a longitudinal direction, and 
 wherein the second urging member is disposed to urge the first unit in a second urging direction along the longitudinal direction of the first unit, so that the power supply terminal is urged toward the body power supply terminal. 
 
     
     
       2. The image forming apparatus according to  claim 1 ,
 wherein the first unit is locked to the second unit using the second urging member. 
 
     
     
       3. The image forming apparatus according to  claim 1 ,
 wherein the first unit includes a sheet guide member for guiding a sheet, a peeling electrode for peeling the sheet having passed through the transfer member from the image carrier, and the power supply terminal for supplying power to the peeling electrode. 
 
     
     
       4. The image forming apparatus according to  claim 3 ,
 wherein the first unit includes an urging unit and a third unit, and the urging unit movably supports the third unit toward the image carrier, the urging unit including the first urging member, the third unit including the transfer member, the peeling electrode, the sheet guide member, the power supply terminal for supplying power to the transfer member, and the power supply terminal for supplying power to the peeling electrode, 
 wherein the first urging member is disposed to urge the third unit toward the image carrier, and 
 wherein the urging unit includes a regulating portion that regulates a movement of the third unit in a direction in which the power supply terminals are separated from the body power supply terminal. 
 
     
     
       5. The image forming apparatus according to  claim 1 ,
 wherein the first unit includes a guide protrusion portion that engages with a guide member disposed in the image forming apparatus body, and 
 wherein the guide member includes a guide portion that guides the guide protrusion portion to a predetermined position, and the guide portion includes a first inclined surface portion, which guides the first unit to a position at which an urging force of the second urging member increases, on an insertion portion side of the guide protrusion portion. 
 
     
     
       6. The image forming apparatus according to  claim 5 ,
 wherein the guide member includes a stopper portion that regulates a movement of the guide protrusion portion moving the guide portion and locks the guide protrusion portion at a predetermined position, and the guide portion includes a second inclined surface portion in a direction intersecting the first inclined surface portion over a predetermined distance from a position of the stopper portion.